Our research project explores mentorship in four studies located in Toronto, Montreal, Vancouver, and online. We questioned how and if performing mentorship in communal spaces created online could nurture and facilitate the levels of trust, vulnerability, security, and support we had experienced through in-person mentorship. We share the challenges we encountered as in-person research activities pivoted to online. We used online conferences, emails, a password-protected website, and notably, the creative practice of making and posting e-postcards, to foster an online mentoring community. Reflecting on our online practices and interactions, we come to theorize mentorship as performance -- emergent, embodied, creative, and relational interactions in motion, creating and holding open spaces of possibility for one another in mentorship relationships.